*{
  padding: 0;
  margin: 0;
}
body{
  display: flex;
  justify-content: center;
}
#myTab{
  margin-top: 30px;
  width: 450px;
  height: 450px;
  border: solid 1px black;
}

.tab-Wrapper{
  width: 100%;
  height: 50px;
  border-bottom: solid 1px black;
}
.tab-Wrapper .tab-item{
  width: 33.3%;
  height: 100%;
  line-height: 50px;
  text-align: center;
  float: left;
  cursor: pointer;
}
.tab-Wrapper .tab-item.current{
  background-color: black;
  color: white;
}

.pageWrapper{
  position: relative;
  width: 100%;
  height: 400px;
}
.pageWrapper .page-item{
  width: 100%;
  height: 100%;
  text-align: center;
  line-height: 400px;
  position: absolute;
  display: none;
  font-size: 40px;
}
.pageWrapper .page-item.current{
  display: block;
}


